1. 5 ,10 .

2. 0 ~6 -> LEDON

6 ~10 -> LEDON

-> LEDON

* .

1. .

2. , , LED .

3. 5 , LED .

( 20~26 -> LEDON|27~30-> LEDON,|31 -> LEDON)

1. , , LED .

2. LED .

( 0~20cm-> LEDON|21~50cm-> LEDON,|51cm -> LEDON)

.